>>26672808Game Freak trademarked "Mew" before they trademarked "Pocket Monsters", or anything else related to Pokémon.
Mew was obtainable on all generation 1 games, including the original red/green in Japan, without the use of external cheating devices, using the trainer glitch, and was also distributed via a few events.
Nothing in Mewtwo's back story makes sense without Mew.
Anyone who uses the words "original 150" with regards to Pokémon deserves to have all of their Nintendo consoles submerged in hydrochloric acid.